e/Xcalc

Information
has gloss	eng: xcalc is an on-screen calculator program for the X Window System. It can be used in algebraic mode or in reverse polish notation. Early versions also featured a slide rule mode, but this was removed for X11R4, which was released in 1989. The sliderule program for the BSD operating systems is based on the slide rule in xcalc.
lexicalization	eng: XCalc
instance of	c/X Window programs

Media
media:img	Xcalc suse.png